U.S. patent application number 15/105009 was filed with the patent office on 2016-11-17 for hermetic compressor.
The applicant listed for this patent is MITSUBISHI ELECTRIC CORPORATION. Invention is credited to Toshifumi KANRI, Takaya KIMOTO, Hiroki NAGASAWA.
Application Number | 20160333881 15/105009 |
Document ID | / |
Family ID | 53756483 |
Filed Date | 2016-11-17 |
United States Patent
Application |
20160333881 |
Kind Code |
A1 |
NAGASAWA; Hiroki ; et
al. |
November 17, 2016 |
HERMETIC COMPRESSOR
Abstract
A compressor includes a suction hole provided in a cylinder. The
suction hole includes a plurality of portions being different in
diameter and disposed from an outer circumferential side toward an
inner circumferential side of the cylinder. The plurality of
portions are reduced more in diameter toward the inner
circumferential side of the cylinder. A central axis of an outer
circumferential side suction hole of the plurality of portions
intersects a central axis of the cylinder. A central axis of an
inner circumferential side suction hole of the plurality of
portions is parallel to the central axis of an outermost
circumferential side portion and decentered from the central axis
in an opposite direction to a direction of a spring hole.
Inventors: |
NAGASAWA; Hiroki; (Tokyo,
JP) ; KIMOTO; Takaya; (Tokyo, JP) ; KANRI;
Toshifumi; (Tokyo, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MITSUBISHI ELECTRIC CORPORATION |
Tokyo |
|
JP |
|
|
Family ID: |
53756483 |
Appl. No.: |
15/105009 |
Filed: |
September 30, 2014 |
PCT Filed: |
September 30, 2014 |
PCT NO: |
PCT/JP2014/076208 |
371 Date: |
June 16, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F25B 31/023 20130101;
F04C 2240/30 20130101; F04C 23/008 20130101; F04C 29/12 20130101;
F04C 2210/26 20130101; F04C 23/001 20130101; F04C 2250/101
20130101; F04C 2230/10 20130101; F04C 18/3562 20130101; F04C 18/356
20130101 |
International
Class: |
F04C 29/12 20060101
F04C029/12; F25B 31/02 20060101 F25B031/02; F04C 23/02 20060101
F04C023/02; F04C 18/356 20060101 F04C018/356; F04C 23/00 20060101
F04C023/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 31, 2014 |
JP |
2014-017544 |
Claims
1. A hermetic compressor comprising: a cylinder housed in a sealed
container; a rolling piston eccentrically rotating along an inner
circumferential surface of the cylinder; a vane dividing an
interior of the cylinder into a suction chamber and a compression
chamber; a vane spring biasing the vane toward the rolling piston;
a spring hole provided in the cylinder and housing the vane spring;
and a suction hole provided in the cylinder and suctioning fluid
into the suction chamber from outside, the suction hole including
at least two holes being different in diameter and disposed from an
outer circumferential side toward an inner circumferential side of
the cylinder, the at least two holes being reduced more in diameter
toward the inner circumferential side of the cylinder, a central
axis of a hole of the at least two holes on an outermost
circumferential side of the cylinder intersecting a central axis of
the cylinder, a central axis of an other hole of the at least two
holes being parallel to the central axis of the hole on the
outermost circumferential side and decentered from the central axis
of the hole on the outermost circumferential side in an opposite
direction to a direction of the spring hole.
2. The hermetic compressor of claim 1, wherein a decentering amount
of a central axis of a hole of the at least two holes on a
second-outermost circumferential side from the central axis of the
hole on the outermost circumferential side is equal to or less than
a half of a difference between a diameter of the hole on the
outermost circumferential side and a diameter of the hole on the
second-outermost circumferential side.
3. The hermetic compressor of claim 1, wherein a decentering amount
of a central axis of a hole of the at least two holes on an
innermost circumferential side of the cylinder from the central
axis of the hole on the outermost circumferential side is equal to
or less than a half of a difference between a diameter of the hole
on the outermost circumferential side and a diameter of the hole on
the innermost circumferential side.
Description
TECHNICAL FIELD
[0001] The present invention relates to a hermetic compressor used
in a refrigeration cycle of an air-conditioning apparatus, a
refrigerator, a freezer, or another apparatus.
BACKGROUND ART
[0002] As a method of improving the efficiency of a compressor, the
diameter of a suction hole may be increased to reduce the loss of
suction pressure. However, the increase in the diameter of the
suction hole is limited, because the suction hole is provided in
the proximity of a vane groove and a spring hole provided in a
cylinder to increase the displacement volume of the compressor.
[0003] Patent Literature 1 describes a configuration in which the
diameter of the suction hole is made larger on the inner
circumferential side of the cylinder than that on the outer
circumferential side of the cylinder to reduce suction
resistance.
[0004] Patent Literature 2 describes a configuration in which the
suction hole is provided so that the central axis of the suction
hole is inclined toward a tangent to the inner circumferential
surface of a cylinder chamber to reduce flow resistance of
suctioned gas. The literature further describes a configuration in
which the suction hole is bent so that the central axis of the
suction hole on the side connected to a suction pipe is directed to
the center of the cylinder, and that the central axis of the
suction hole on the side of the cylinder chamber is inclined toward
the tangent to the inner circumferential surface of the cylinder
chamber.
CITATION LIST
Patent Literature
[0005] Patent Literature 1: Japanese Unexamined Patent Application
Publication No. 2001-280277 (FIG. 6)
[0006] Patent Literature 2: Japanese Unexamined Patent Application
Publication No. 7-27074(FIG. 1 and FIG. 3)
SUMMARY OF INVENTION
Technical Problem
[0007] The configuration described in Patent Literature 1 has the
diameter of the suction hole expanded on the inner circumferential
side of the cylinder, and thus has a problem that drilling from the
outer circumferential side of the cylinder alone is unable to form
the suction hole, thereby decreasing productivity.
[0008] Further, the configuration described in Patent Literature 2
has the central axis of the suction hole not perpendicular to the
outer circumferential surface of the cylinder, and thus has a
problem of making the drilling difficult and requiring a special
joint at a portion welded to a sealed container, thereby decreasing
productivity. Furthermore, the configuration having the bent
suction hole described in the literature has a problem that normal
drilling is unable to form the suction hole, thereby decreasing
productivity.
[0009] The present invention has been made to solve the
above-described problems, and aims to provide a hermetic compressor
having improved compressor efficiency and being prevented from
decreasing in productivity.
Solution to Problem
[0010] A hermetic compressor according to the present invention
includes a cylinder housed in a sealed container, a rolling piston
eccentrically rotating along an inner circumferential surface of
the cylinder, a vane dividing an interior of the cylinder into a
suction chamber and a compression chamber, a vane spring biasing
the vane toward the rolling piston, a spring hole provided in the
cylinder and housing the vane spring, and a suction hole provided
in the cylinder and suctioning fluid into the suction chamber from
outside. The suction hole includes a plurality of portions being
different in diameter and disposed from an outer circumferential
side toward an inner circumferential side of the cylinder. The
plurality of portions are reduced more in diameter toward the inner
circumferential side of the cylinder. A central axis of a portion
of the plurality of portions on an outermost circumferential side
of the cylinder intersects a central axis of the cylinder. A
central axis of an other portion of the plurality of portions is
parallel to the central axis of the portion on the outermost
circumferential side and decentered from the central axis of the
portion on the outermost circumferential side in an opposite
direction to a direction of the spring hole.
Advantageous Effects of Invention
[0011] According to the present invention, it is possible to make
the central axis of the outermost circumferential side portion of
the suction hole perpendicular to the outer circumferential surface
of the cylinder, and thus easily drill the suction hole and prevent
decrease in productivity of the compressor. Further, with the
central axis of the another portion of the suction hole decentered
in the direction opposite to the spring hole, it is possible to
reduce the suction pressure loss while the cylinder height of the
compressor is maintained, and thus improve the compressor
efficiency of the compressor.
BRIEF DESCRIPTION OF DRAWINGS
[0012] FIG. 1 is a longitudinal sectional view illustrating a
configuration of a compressor 1 according to Embodiment 1 of the
present invention.
[0013] FIG. 2 is a top view illustrating a configuration of a
cylinder 21 having an increasable displacement volume while a
cylinder height is maintained, the configuration of the cylinder 21
being a premise of Embodiment 1 of the present invention.
[0014] FIG. 3 is a top view illustrating a configuration of the
cylinder 21 of the compressor 1 according to Embodiment 1 of the
present invention.
[0015] FIG. 4 is a top view illustrating a configuration of a
suction hole 23 formed in the cylinder 21 of the compressor 1
according to Embodiment 1 of the present invention.
DESCRIPTION OF EMBODIMENTS
Embodiment 1
[0016] A description will be given of a hermetic compressor
(hereinafter simply referred to as the "compressor") according to
Embodiment 1 of the present invention. FIG. 1 is a longitudinal
sectional view illustrating a configuration of a compressor 1 (a
rolling piston compressor) according to Embodiment 1. The
compressor 1 is one of component elements of a refrigeration cycle
used in an air-conditioning apparatus, a refrigerator, a freezer, a
vending machine, a water heater, or another apparatus. In the
following drawings including FIG. 1, the dimensional relationships,
shapes, and other elements of component members may be different
from actual ones.
[0017] The compressor 1 illustrated in FIG. 1 suctions fluid
(refrigerant circulating through the refrigeration cycle, for
example), compresses the fluid into high-temperature and
high-pressure fluid, and discharges the fluid. The compressor 1
includes a compression mechanism section 10 and an electric motor
section 50 that drives the compression mechanism section 10. The
compression mechanism section 10 and the electric motor section 50
are housed in a sealed container 60. Not-illustrated refrigerating
machine oil is stored in a bottom part of the sealed container
60.
[0018] The electric motor section 50 includes a stator 51 and a
rotator 52. An outer circumferential portion of the stator 51 is
fixed to an inner circumferential surface of the sealed container
60. A crankshaft 53 is fitted in the rotator 52. Two upper and
lower eccentric portions 54a and 54b decentered in mutually
opposite directions (directions shifted in phase from each other by
180 degrees) are formed to the crankshaft 53.
[0019] The compression mechanism section 10 includes two cylinders
21 and 31, a divider plate 40 that divides the cylinder 21 and the
cylinder 31 from each other, a main shaft bearing 11 and a
sub-shaft bearing 12 that are disposed on upper and lower ends of a
stacked body including a stack of the cylinder 21, the divider
plate 40, and the cylinder 31 and also serve as end plates of the
stacked body, a rolling piston 22 housed in the cylinder 21 and
having the eccentric portion 54a fitted in the rolling piston 22,
and a rolling piston 32 housed in the cylinder 31 and having the
eccentric portion 54b fitted in the rolling piston 32. Further,
although illustration is omitted in FIG. 1, a vane for dividing an
inner circumferential side space of each of the cylinders 21 and 31
into a suction chamber and a compression chamber (a high-pressure
chamber) is inserted in a vane groove in each of the cylinders 21
and 31.
[0020] The compressor 1 further includes an accumulator 61 provided
outside and adjacent to the sealed container 60 to store
low-pressure refrigerant flowed from the outside (an evaporator
side of the refrigeration cycle, for example) and separate the
refrigerant into gas and liquid, suction pipes 62 and 63 for
suctioning the refrigerant gas in the accumulator 61 into the
sealed container 60, a suction hole 23 for guiding the refrigerant
gas suctioned via the suction pipe 62 into the suction chamber in
the cylinder 21, a suction hole 33 for guiding the refrigerant gas
suctioned via the suction pipe 63 into the suction chamber in the
cylinder 31, discharge holes (not illustrated in FIG. 1) for
discharging the high-pressure refrigerant gas compressed in the
respective compression chambers into the space inside the sealed
container 60, and a discharge pipe 64 for discharging the
high-pressure refrigerant gas discharged into the space inside the
sealed container 60 to the outside (a condenser side of the
refrigeration cycle, for example).
[0021] In the thus-configured compressor 1, the rotator 52 rotates
to rotate the crankshaft 53 fitted in the rotator 52, and the
eccentric portions 54a and 54b rotate as the crankshaft 53 rotates.
With the rotation of the eccentric portion 54a, the rolling piston
22 rotates and slides inside the cylinder 21. Further, with the
rotation of the eccentric portion 54b, the rolling piston 32
rotates and slides inside the cylinder 31. That is, the rolling
pistons 22 and 32 eccentrically rotate along the respective inner
circumferential surfaces of the cylinders 21 and 31.
[0022] Thereby, the refrigerant gas is suctioned into the suction
chambers in the cylinders 21 and 31 from the suction pipes 62 and
63, and the refrigerant gas is compressed in the compression
chambers in the cylinders 21 and 31. The high-pressure refrigerant
gas compressed in the compression chambers is discharged into the
sealed container 60, and is discharged to the outside of the sealed
container 60 from the discharge pipe 64.
[0023] FIG. 2 is a top view illustrating a configuration of the
cylinder 21 having the increasable displacement volume while the
cylinder height is maintained, the configuration of the cylinder 21
being a premise of Embodiment 1. The cylinder 31 has a similar
configuration to that of the cylinder 21, and thus illustration and
description thereof will be omitted. As illustrated in FIG. 2, the
cylinder 21 includes a vane groove 24 formed from the inner
circumferential surface toward the outside in the radial direction
and a spring hole 26 formed parallel to the vane groove 24 from the
outer circumferential surface toward the inside (center side) in
the radial direction. A vane 25 is slidably inserted in the vane
groove 24. A vane spring 30 for biasing the vane 25 toward the
rolling piston 22 is housed in the spring hole 26. A tip end of the
vane 25 is brought into contact with the outer circumferential
surface of the rolling piston 22 by biasing force of the vane
spring 30.
[0024] The cylinder 21 further includes a suction hole 23 and a
discharge hole 27 disposed on two sides of the vane groove 24 and
the spring hole 26 to sandwich the vane groove 24 and the spring
hole 26 in the circumferen direction. The suction hole 23 passes
through the space between the inner circumferential surface and the
outer circumferential surface of the cylinder 21 along the radial
direction. The discharge hole 27 is formed from the inner
circumferential surface of the cylinder 21 toward the outside in
the radial direction, and communicates with the space inside the
sealed container 60 via a discharge hole and a discharge muffler
provided to the main shaft bearing 11 (the end plate). The space
inside the cylinder 21 is divided by the vane 25 into a suction
chamber 28 communicating with the suction hole 23 and a compression
chamber 29 communicating with the discharge hole 27.
[0025] The suction hole 23 includes an outer circumferential side
suction hole 23a formed on the side of the outer circumferential
surface of the cylinder 21 and an inner circumferential side
suction hole 23b formed on the side of the inner circumferential
surface of the cylinder 21. The cross-sectional shape of each of
the outer circumferential side suction hole 23a and the inner
circumferential side suction hole 23b is circular. The diameter of
the outer circumferential side suction hole 23a is .phi.D, and the
diameter of the inner circumferential side suction hole 23b is
.phi.d that is less than .phi.D (.phi.d<.phi.D). That is, the
suction hole 23 includes a plurality of portions that are different
in diameter and disposed from the outer circumferential side toward
the inner circumferential side of the cylinder 21 (toward the
central axis of the suction hole 23). The plurality of portions of
the suction hole 23 are reduced more in diameter toward the inner
circumferential side of the cylinder 21. In the configuration
illustrated in FIG. 2, the central axis of the outer
circumferential side suction hole 23a and the central axis of the
inner circumferential side suction hole 23b are coaxial, and the
two central axes intersect the central axis of the cylinder 21
extending perpendicularly to the plane of paper. The angle of
inclinat on of the outer circumferential side suction hole 23a and
the inner circumferential side suction hole 23b to the spring hole
26 and the vane groove 24 is .phi.. The angle .phi. needs to be
reduced to advance the start of compression (reduce a compression
start angle) and improve the volumetric efficiency of the
compressor. The angle .phi. is thus set to the smallest possible
value with which the inner circumferential side suction hole 23b
does not obstruct the spring hole 26 and the vane groove 24.
[0026] FIG. 3 is a top view illustrating a configuration of the
cylinder 21 of the compressor 1 according to Embodiment 1. FIG. 3
only illustrates a portion of the cylinder 21 corresponding to an
upper left portion in FIG. 2. As illustrated in FIG. 3, the suction
hole 23 of Embodiment 1 includes the outer circumferential side
suction hole 23a having the diameter .phi.D and the inner
circumferential side suction hole 23b having the diameter .phi.d
that is less than the diameter .phi.D, similarly as in the
configuration illustrated in FIG. 2. In Embodiment 1, however, a
central axis C2 of the inner circumferential side suction hole 23b
is parallel to but decentered from a central axis C1 of the outer
circumferential side suction hole 23a. The central axis C1 of the
outer circumferential side suction hole 23a intersects a central
axis C3 of the cylinder 21, and the central axis C2 of the inner
circumferential side suction hole 23b is twisted from the central
axis C3 of the cylinder 21. The direction of decentering the
central axis C2 from the central axis C1 is in a plane
perpendicular to the central axis C3 of the cylinder 21 and
opposite to the direction of the spring hole 26 and the vane groove
24. Further, a decentering amount e of the central axis C2 from the
central axis C1 is equal to or less than a half of the difference
between the diameter .phi.D of the outer circumferential side
suction hole 23a and the diameter .phi.d of the inner
circumferential side suction hole 23b
(e.ltoreq.(.phi.D--.phi.d)/2). That is, when the outer
circumferential side suction hole 23a and the inner circumferential
side suction hole 23b are viewed in the direction of the central
axis C1 (the radial direction of the cylinder 21), an inner wall
surface of the inner circumferential side suction hole 23b is in
contact with or located further inside than an inner wall surface
of the outer circumferential side suction hole 23a.
[0027] In the configuration of Embodiment 1, the central axis C1 of
the outer circumferential side suction hole 23a of the suction hole
2 located at the outermost circumference intersects the central
axis C3 of the cylinder 21. It is thus possible to make the central
axis C1 of the outer circumferential side suction hole 23a
perpendicular to the outer circumferential surface of the cylinder
21, and easily drill the suction hole 23. Further, the decentering
amount e is equal to or less than a half of the difference between
the diameter .phi.D of the outer circumferential side suction hole
23a and the diameter .phi.d of the inner circumferential side
suction hole 23b. In the formation of the suction hole 23, thus, it
is possible to sequentially drill the outer circumferential side
and then the inner circumferential side of the cylinder 21 in a
single work fixing operation. Thus, it is possible to prevent the
decrease in productivity of the compressor 1.
[0028] Further, in the configuration of Embodiment 1, it is
possible to increase the diameter .phi.d of the inner
circumferential side suction hole 23b by twice the decentering
amount e, as compared with that in the configuration illustrated in
FIG. 2, while the angle .phi. to be equal to that in the
configuration illustrated in FIG. 2 is maintained. That is, it is
possible to reduce the suction pressure loss while the cylinder
height of the compressor 1 is maintained. A description will be
given of this point with FIG. 4.
[0029] FIG. 4 is a top view illustrating a configuration of the
suction hole 23 formed in the cylinder 21 of the compressor 1
according to Embodiment 1. In FIG. 4, the inner wall surface of the
inner circumferential side suction hole 23b in the configuration
illustrated in FIG. 2 is indicated by a broken line. Herein, the
diameter of the inner circumferential side suction hole 23b in the
configuration illustrated in FIG. 2 is represented as .phi.d1, and
the diameter of the inner circumferential side suction hole 23b in
Embodiment 1 is represented as .phi.d2. As illustrated in FIG. 4,
in Embodiment 1, the central axis C2 of the inner circumferential
side suction hole 23b is decentered from the central axis C1 of the
outer circumferential side suction hole 23a toward the opposite
side of the spring hole 26 and the vane groove 24 (in a lower left
direction in FIG. 4). It is thereby possible to increase the
diameter .phi.d2 of the inner circumferential side suction hole 23b
by twice the decentering amount e as compared with the diameter
.phi.d1 (.phi.d2=.phi.d1+2e), while the position of the inner wall
surface of the inner circumferential side suction hole 23b on the
side of the spring hole 26 and the vane groove 24 (the right side
in FIG. 4) is maintained, that is, while the angle .phi. is
practically maintained. Thus, it is possible to further reduce the
suction pressure loss in the compressor 1 capable of increasing the
displacement volume while the cylinder height is maintained, and
thus further improve the compressor efficiency. It is thereby
possible to achieve a reduction in size and weight of the
compressor 1 while the performance of the compressor 1 is
maintained, and save energy in an air-conditioning apparatus, a
refrigerator, a freezer, or another apparatus using the compressor
1.
[0030] As described above, the compressor 1 according to Embodiment
1 includes the cylinder 21 housed in the sealed container 60, the
rolling piston 22 that eccentrically rotates along the inner
circumferential surface of the cylinder 21, the vane 25 that
divides the interior of the cylinder 21 into the suction chamber 28
and the compression chamber 29, the vane spring 30 that biases the
vane 25 toward the rolling piston 22, the spring hole 26 provided
in the cylinder 21 to house the vane spring 30, and the suction
hole 23 provided in the cylinder 21 to suction fluid into the
suction chamber 28 from the outside. The suction hole 23 includes
the plurality of portions that are different in diameter and
disposed from the outer circumferential side toward the inner
circumferential side of the cylinder 21. The plurality of portions
of the suction hole 23 are reduced more in diameter toward the
inner circumferential side of the cylinder 21. The central axis C1
of a portion of the plurality of portions on the outermost
circumferential side of the cylinder 21 (the outer circumferential
side suction hole 23a in the present example) intersects the
central axis C3 of the cylinder 21. The central axis C2 of another
portion of the plurality of portions (the inner circumferential
side suction hole 23b in the present example) is parallel to the
central axis C1 of the outermost circumferential side portion and
decentered from the central axis C1 in the opposite direction to
the direction of the spring hole 26.
[0031] In this configuration, it is possible to make the central
axis C1 of the outermost circumferential side portion perpendicular
to the outer circumferential surface of the cylinder 21, and thus
easily drill the suction hole 23 and prevent the decrease in
productivity of the compressor 1. Further, it is possible to reduce
the suction pressure loss while the cylinder height of the
compressor 1 is maintained, and thus further improve the compressor
efficiency of the compressor 1.
[0032] Further, the decentering amount e of the central axis C2 of
a portion on a second-outermost circumferential side of the
plurality of portions (the inner circumferential side suction hole
23b in the present example) from the central axis C1 of the
outermost circumferential side portion is equal to or less than a
half of the difference between the diameter .phi.D of the outermost
circumferential side portion and the diameter .phi.d of the portion
on the second-outermost circumferential side.
[0033] Further, the decentering amount e of the central axis C2 of
a portion of the plurality of portions on the innermost
circumferential side of the cylinder 21 (the inner circumferential
side suction hole 23b in the present example) from the central axis
C1 of the outermost circumferential side portion is equal to or
less than a half of the difference between the diameter .phi.D of
the outermost circumferential side portion and the diameter .phi.d
of the innermost circumferential side portion.
[0034] In this configuration, it is possible to sequentially drill
the outer circumferential side and then the inner circumferential
side of the cylinder 21 in one work fixing operation in the
formation of the suction hole 23, and thus prevent the decrease in
productivity of the compressor 1.
Other Embodiments
[0035] The present invention is not limited to Embodiment 1
described above, and may be modified in various ways.
[0036] For example, although the suction hole 23 including the two
portions different in diameter (the outer circumferential side
suction hole 23a and the inner circumferential side suction hole
23b ) has been described as an example in Embodiment 1 described
above, the suction hole 23 may include three or more portions
different in diameter (three or more portions reduced more in
diameter toward the inner circumferential side). In this case, it
is desirable that the decentering amount between the central axis
of a portion of the suction hole 23 located on the second-outermost
circumferential side of the cylinder 21 and the central axis of a
portion of the suction hole 23 located on the outermost
circumferential side of the cylinder 21 is set to be equal to or
less than a half of the difference between the diameter of the
above-described outermost circumferential side portion and the
diameter of the above-described portion on the second-outermost
circumferential side. It is also desirable that the decentering
amount between the central axis of a portion of the suction hole 23
located on the innermost circumferential side of the cylinder 21
and the central axis of a portion of the suction hole 23 located on
the outermost circumferential side of the cylinder 21 is set to be
equal to or less than a half of the difference between the diameter
of the above-described outermost circumferential side portion and
the diameter of the above-described innermost circumferential side
portion.
[0037] Further, although the compressor 1 including the two
cylinders 21 and 31 has been described as an example in Embodiment
1 described above, the present invention is also applicable to a
compressor including one cylinder or three or more cylinders.
[0038] Further, Embodiment 1 and the modified examples described
above may be implemented in combination.
REFERENCE SIGNS LIST
[0039] 1 compressor, 10 compression mechanism section, 11 main
shaft bearing, 12 sub-shaft bearing, 21, 31 cylinder, 22, 32
rolling piston, 23, 33 suction hole, 23a outer circumferential side
suction hole, 23b inner circumferential side suction hole, 24 vane
groove, 25 vane, 26 spring hole, 27 discharge hole, 28 suction
chamber, 29 compression chamber, 30 vane spring, 40 divider plate,
50 electric motor section, 51 stator, 52 rotator, 53 crankshaft,
54a, 54b eccentric portion, 60 sealed container, 61 accumulator,
62, 63 suction pipe, 64 discharge pipe, C1, C2, C3 central axis
* * * * *